<template>
  <div>
    <!-- 头部面包屑区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片区域 -->
    <el-card class="box-card">
      <el-row :gutter="20">
        <el-col :span="10">
          <el-input class="input-with-select" placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="3"
          ><el-button type="primary" @click="addDialogVisible = true">添加用户</el-button></el-col
        >
      </el-row>
    </el-card>
    <!-- 用户列表区域 -->
    <el-table :data="userlist" stripe border>
      <el-table-column type="index"></el-table-column>
      <el-table-column prop="username" label="姓名"> </el-table-column>
      <el-table-column prop="email" label="邮箱"> </el-table-column>
      <el-table-column prop="mobile" label="电话"> </el-table-column>
      <el-table-column prop="role_name" label="角色"> </el-table-column>
      <el-table-column label="状态">
        <template slot-scope="scope">
          <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
          </el-switch>
        </template>
      </el-table-column>
      <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
              <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
              <!-- 删除按钮 -->
              <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
              <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
              </el-tooltip>
          </template>
      </el-table-column>
    </el-table>
    <!-- 分页区域 -->
    <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="queryInfo.pagenum" :page-sizes="[1, 2, 5, 10]" :page-size="queryInfo.pagesize" layout="total, sizes, prev, pager, next, jumper" :total="total">
    </el-pagination>
    <!-- 添加用户对话框区域 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
        <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
            <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
            <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
            <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
            <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
            <el-button @click="addDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="addUser">确 定</el-button>
        </span>
    </el-dialog>
    <!-- 修改对话框区域 -->
    <el-dialog title="修改用户信息" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
        <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
            <el-form-item label="用户名">
                <el-input v-model="editForm.username" disabled></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
                <el-input v-model="editForm.email"></el-input>
            </el-form-item>
            <el-form-item label="电话" prop="mobile">
                <el-input v-model="editForm.mobile"></el-input>
            </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
            <el-button @click="editDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="editUserInfo">确 定</el-button>
        </span>
    </el-dialog>
    <!-- 分配角色对话框 -->
    <el-dialog
  title="分配角色"
  :visible.sync="setRoleDialogVisible"
  width="50%" @close="setRoleDialogClosed">
  <div>
    <p>当前的用户：{{userInfo.username}}</p>
    <p>当前用户的角色：{{userInfo.role_name}}</p>
    <p>分配新角色：
      <el-select v-model="selectedRoleId" placeholder="请选择">
    <el-option
      v-for="item in rolesList"
      :key="item.id"
      :label="item.roleName"
      :value="item.id">
    </el-option>
  </el-select>
    </p>
  </div>
  <div slot="footer" class="dialog-footer">
    <el-button @click="dialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
  </div>
</el-dialog>
  </div>
</template>
<script>
export default {
  created: function () {
    this.getUserList()
  },
  data: function () {
      // 验证邮箱规则
      var checkEmail = (rule, value, callback) => {
          const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+((\.[a-zA-Z0-9_-]{2,3}){1,2})/;
          if(regEmail.test(value)) {
              return callback()
          }
          callback(new Error('请输入合法邮箱'))
        }
      // 手机号码验证规则 
        var checkMobile = (rule, value, callback) => {
          const regMobile = /^(0|86|17951?13[0-9]|15[0-9]|17[678]|18[0-9]|14[57])[0-9]{8}$/;
          if(regMobile.test(value)) {
              return callback()
          }
          callback(new Error('请输入合法手机号码'))
        }
    return {
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 2,
      },
      userlist: [], //存储用户列表
      total: 0, //存储用户列表总页数
      // 控制对话框的显示与隐藏
      addDialogVisible: false,
      // 添加用户表单数据
      addForm: {
          username: '',
          password: '',
          email: '',
          mobile: ''
      },
      // 对话框表单验证
      addFormRules: {
          username: [{ required: true, message: '请输入用户名', trigger: 'blur' },
            { min: 3, max: 10, message: '长度在 3 到 10个字符', trigger: 'blur' }],
        password: [{ required: true, message: '请输入密码', trigger: 'blur' },
                { min: 5, max: 15, message: '长度在 5 到 15 个字符', trigger: 'blur' }],
          email: [{ required: true, message: '请输入邮箱', trigger: 'blur' },
          {validator: checkEmail, trigger: 'blur'}],
          mobile: [{ required: true, message: '请输入手机号码', trigger: 'blur' },{validator: checkMobile, trigger: 'blur'}]
      },
      editDialogVisible: false,
      editForm: {},
      // 修改（编辑）表单的验证规则
      editFormRules: {
          email: [{ required: true, message: '请输入邮箱', trigger: 'blur' },
          {validator: checkEmail, trigger: 'blur'}],
          mobile: [{ required: true, message: '请输入手机号码', trigger: 'blur' },{validator: checkMobile, trigger: 'blur'}]
      },
      setRoleDialogVisible: false,
      // 用于存放当下正在被分配角色的用户
      userInfo: {},
      // 用于存放偶有角色的数据列表
      rolesList: [],
      // 已选中的角色id
      selectedRoleId: ''
    }
  },
  methods: {
      // 渲染列表页面
    getUserList: async function () {
      const { data: res } = await this.$http.get('users', {
        params: this.queryInfo,
      })
      console.log(res)
      if (res.meta.status !== 200) {
        return this.$http.error('获取管理员列表失败')
      }
      this.userlist = res.data.users
      this.total = res.data.total
    },
    // 监听pagesize改变的事件
    handleSizeChange: function(newSize) {
      console.log(newSize)  
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    //监听页码值 改变事件
    handleCurrentChange: function(newPage) {
      console.log(newPage)
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听switch 开关状态的改变
    userStateChanged: async function(userInfo) {
        console.log(userInfo)
        const { data: res } = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
        console.log(res)
        if(res.status !== 200) {
            userInfo.mg_state = !userInfo.mg_state
            return this.$http.error('更新用户状态失败')
        }
        this.$message.success('更新用户状态成功！')
    },
    // 监听用户对话框关闭事件
    addDialogClosed: function() {
        this.$refs.addFormRef.resetFields()
    },
    // 点击按钮添加用户
    addUser: function() {
        // 确定前需要先进行预验证
        this.$refs.addFormRef.validate(async valid => {
            console.log(valid)
            if(!valid) return
            // 可以发起添加用户网络请求
            const {data : res} = await this.$http.post('users', this.addForm)
            console.log(res)
            if(res.meta.status !== 201) {
                return this.$message.error('添加用户失败')
            }
            this.$message.success('添加用户成功')
            // 隐藏用户添加对话框
            this.addDialogVisible = false
            // 重新获取列表数据
            this.getUserList()
        })
    },
    // 展示用户编辑对话框
    showEditDialog: async function(id) {
        const {data: res} = await this.$http.get('users/' + id);
        if(res.meta.status !== 200) {
            return this.$message.error('查询用户信息失败')
        }
        this.editForm = res.data
        this.editDialogVisible = true
    },
    // 重置用户编辑对话框
    editDialogClosed: function() {
        this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息并提交
    editUserInfo: function() {
        // 信息预验证
        this.$refs.editFormRef.validate(async valid => {
            if(!valid) return
            // 发起修改用户信息的数据请求
            const {data: res} = await this.$http.put('users/' + this.editForm.id, {email: this.editForm.email, mobile: this.editForm.mobile})
            console.log(res)
            if(res.meta.status !== 200) {
                return this.$message.error('修改用户信息失败')}
            // 关闭对话框
            this.editDialogVisible = false
            // 刷新数据列表
            this.getUserList()
            // 提示修改成功
            this.$message.success('修改用户信息成功')
        })
    },
    // 根据id删除对应的用户信息
    removeUserById: async function(id) {
         const confirmResult = await this.$confirm('此操作将永久删除该成员, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err)
        // 如果用户确认删除，则返回字符串confirm
        // 如果用户取消删除，则返回字符串cancel
        console.log(confirmResult)
        if(confirmResult !== 'confirm') {
            return this.$message.info('已取消删除')
        }
        // console.log('确认删除')
        const {data: res} = await this.$http.delete('users/' + id)
        if(res.meta.status !== 200) {
            return this.$message.error('删除用户失败')
        }
        this.$message.success('删除用户成功')
        this.getUserList()
    } ,
    setRole: async function(userInfo) {
      this.userInfo = userInfo
      const {data: res} = await this.$http.get('roles')
      if(res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败')
      }
      this.rolesList = res.data
      this.setRoleDialogVisible = true
    },
    // 点击确定按钮，分配角色
    saveRoleInfo: async function() {
      if(!this.selectedRoleId) {
        return this.$message.info('请选择要分配的角色')
      }
      const {data: res} = await this.$http.put(`users/${this.userInfo.id}/role`, {rid: this.selectedRoleId})
      if(res.meta.status !== 200) {
        return this.$message.error('分配角色失败')
      }
      this.$message.success('分配角色成功')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed: function() {
      // 重置下拉框
      this.selectedRoleId = ''
      this.userInfo = {}
    }           
  },
}
</script>
<style lang="less" scoped>
</style>